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/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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/*
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* @test
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* @summary Corrupt the header CRC fields of the top archive. VM should exit with an error.
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* @requires vm.cds
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* @library /test/lib /test/hotspot/jtreg/runtime/appcds /test/hotspot/jtreg/runtime/appcds/test-classes
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* @build Hello sun.hotspot.WhiteBox
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* @run driver ClassFileInstaller -jar hello.jar Hello
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* @run driver ClassFileInstaller sun.hotspot.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI ArchiveConsistency
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*/
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import java.io.File;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.channels.FileChannel;
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import java.nio.file.StandardOpenOption;
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import static java.nio.file.StandardOpenOption.READ;
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import static java.nio.file.StandardOpenOption.WRITE;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.List;
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import sun.hotspot.WhiteBox;
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public class ArchiveConsistency extends DynamicArchiveTestBase {
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public static WhiteBox wb;
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public static int int_size; // size of int
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public static String[] shared_region_name = {"MiscCode", "ReadWrite", "ReadOnly", "MiscData"};
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public static int num_regions = shared_region_name.length;
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public static void main(String[] args) throws Exception {
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runTest(ArchiveConsistency::testCustomBase);
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}
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// Test with custom base archive + top archive
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static void testCustomBase() throws Exception {
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String topArchiveName = getNewArchiveName("top2");
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String baseArchiveName = getNewArchiveName("base");
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dumpBaseArchive(baseArchiveName);
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doTest(baseArchiveName, topArchiveName);
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}
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public static void setReadWritePermission(File file) throws Exception {
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if (!file.canRead()) {
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if (!file.setReadable(true)) {
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throw new IOException("Cannot modify file " + file + " as readable");
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}
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}
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if (!file.canWrite()) {
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if (!file.setWritable(true)) {
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throw new IOException("Cannot modify file " + file + " as writable");
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}
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}
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}
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public static long readInt(FileChannel fc, long offset, int nbytes) throws Exception {
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ByteBuffer bb = ByteBuffer.allocate(nbytes);
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bb.order(ByteOrder.nativeOrder());
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fc.position(offset);
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fc.read(bb);
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return (nbytes > 4 ? bb.getLong(0) : bb.getInt(0));
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}
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public static long align_up_page(long l) throws Exception {
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// wb is obtained in getFileOffsetInfo() which is called first in main() else we should call
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// WhiteBox.getWhiteBox() here first.
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int pageSize = wb.getVMPageSize();
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return (l + pageSize -1) & (~ (pageSize - 1));
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}
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public static void writeData(FileChannel fc, long offset, ByteBuffer bb) throws Exception {
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fc.position(offset);
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fc.write(bb);
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fc.force(true);
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}
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public static FileChannel getFileChannel(File jsa) throws Exception {
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List<StandardOpenOption> arry = new ArrayList<StandardOpenOption>();
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arry.add(READ);
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arry.add(WRITE);
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return FileChannel.open(jsa.toPath(), new HashSet<StandardOpenOption>(arry));
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}
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public static void modifyJsaHeaderCRC(File jsa) throws Exception {
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FileChannel fc = getFileChannel(jsa);
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int_size = wb.getOffsetForName("int_size");
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System.out.println(" int_size " + int_size);
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ByteBuffer bbuf = ByteBuffer.allocateDirect(int_size);
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for (int i = 0; i < int_size; i++) {
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bbuf.put((byte)0);
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}
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int baseArchiveCRCOffset = wb.getOffsetForName("DynamicArchiveHeader::_base_archive_crc");
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int crc = 0;
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System.out.printf("%-12s%-12s\n", "Space name", "CRC");
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for (int i = 0; i < 4; i++) {
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baseArchiveCRCOffset += int_size * i;
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System.out.println(" baseArchiveCRCOffset " + baseArchiveCRCOffset);
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crc = (int)readInt(fc, baseArchiveCRCOffset, int_size );
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System.out.printf("%-11s%-12d\n", shared_region_name[i], crc);
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bbuf.rewind();
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writeData(fc, baseArchiveCRCOffset, bbuf);
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}
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fc.force(true);
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if (fc.isOpen()) {
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fc.close();
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}
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}
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private static void doTest(String baseArchiveName, String topArchiveName) throws Exception {
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String appJar = ClassFileInstaller.getJarPath("hello.jar");
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String mainClass = "Hello";
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dump2(baseArchiveName, topArchiveName,
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"-Xlog:cds",
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"-Xlog:cds+dynamic=debug",
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"-cp", appJar, mainClass)
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.assertNormalExit(output -> {
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output.shouldContain("Buffer-space to target-space delta")
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.shouldContain("Written dynamic archive 0x");
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});
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File jsa = new File(topArchiveName);
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if (!jsa.exists()) {
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throw new IOException(jsa + " does not exist!");
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}
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// Modify the CRC values in the header of the top archive.
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wb = WhiteBox.getWhiteBox();
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setReadWritePermission(jsa);
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modifyJsaHeaderCRC(jsa);
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run2(baseArchiveName, topArchiveName,
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"-Xlog:class+load",
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"-Xlog:cds+dynamic=debug,cds=debug",
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"-XX:+VerifySharedSpaces",
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"-cp", appJar, mainClass)
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.assertAbnormalExit(output -> {
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output.shouldContain("Header checksum verification failed")
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.shouldContain("Unable to use shared archive")
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.shouldHaveExitValue(1);
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});
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}
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}
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